Russian
Albanian
Arabic
Armenian
Azerbaijani
Belarusian
Bengali
Bosnian
Catalan
Czech
Danish
Deutsch
Dutch
English
Estonian
Finnish
Français
Greek
Haitian Creole
Hebrew
Hindi
Hungarian
Icelandic
Indonesian
Irish
Italian
Japanese
Korean
Latvian
Lithuanian
Macedonian
Mongolian
Norwegian
Persian
Polish
Portuguese
Romanian
Russian
Serbian
Slovak
Slovenian
Spanish
Swahili
Swedish
Turkish
Ukrainian
Vietnamese
Български
中文(简体)
中文(繁體)
Experimental Cell Research 2013-Jul

Quercetin and epigallocatechin gallate inhibit glucose uptake and metabolism by breast cancer cells by an estrogen receptor-independent mechanism.

Только зарегистрированные пользователи могут переводить статьи
Войти Зарегистрироваться
Ссылка сохраняется в буфер обмена
Liliana Moreira
Isabel Araújo
Tito Costa
Ana Correia-Branco
Ana Faria
Fátima Martel
Elisa Keating

Ключевые слова

абстрактный

In this study we characterized (3)H-2-deoxy-d-glucose ((3)H -DG) uptake by the estrogen receptor (ER)-positive MCF7 and the ER-negative MDA-MB-231 human breast cancer cell lines and investigated the effect of quercetin (QUE) and epigallocatechin gallate (EGCG) upon (3)H-DG uptake, glucose metabolism and cell viability and proliferation. In both MCF7 and MDA-MB-231 cells (3)H-DG uptake was (a) time-dependent, (b) saturable with similar capacity (Vmax) and affinity (Km), (c) potently inhibited by cytochalasin B, an inhibitor of the facilitative glucose transporters (GLUT), (d) sodium-independent and (e) slightly insulin-stimulated. This suggests that (3)H-DG uptake by both cell types is mediated by members of the GLUT family, including the insulin-responsive GLUT4 or GLUT12, while being independent of the sodium-dependent glucose transporter (SGLT1). QUE and EGCG markedly and concentration-dependently inhibited (3)H-DG uptake by MCF7 and by MDA-MB-231 cells, and both compounds blocked lactate production by MCF7 cells. Additionally, a 4h-treatment with QUE or EGCG decreased MCF7 cell viability and proliferation, an effect that was more potent when glucose was available in the extracellular medium. Our results implicate QUE and EGCG as metabolic antagonists in breast cancer cells, independently of estrogen signalling, and suggest that these flavonoids could serve as therapeutic agents/adjuvants even for ER-negative breast tumors.

Присоединяйтесь к нашей
странице facebook

Самая полная база данных о лекарственных травах, подтвержденная наукой

  • Работает на 55 языках
  • Травяные лекарства, подтвержденные наукой
  • Распознавание трав по изображению
  • Интерактивная карта GPS - отметьте травы на месте (скоро)
  • Прочтите научные публикации, связанные с вашим поиском
  • Ищите лекарственные травы по их действию
  • Организуйте свои интересы и будьте в курсе новостей исследований, клинических испытаний и патентов

Введите симптом или заболевание и прочтите о травах, которые могут помочь, введите лекарство и узнайте о болезнях и симптомах, против которых оно применяется.
* Вся информация основана на опубликованных научных исследованиях.

Google Play badgeApp Store badge